Technical Request - 1998 A6 1.8T Overheating ? Help!

Dec 23, 2003 3 Replies

Rate this thread:

Stuart 22 years ago

My temperature warning light came on today. Pulled over immediately. Temp was at the second last notch on the gauge (UK).

Useful facts : No water loss. Oil in engine. Fan working. Engine does not smell hot.

Other symptoms: The heater temp was inconsistent with the engine temp. i.e. on a high level it was sometimes blowing warm rather than hot. It was hot initially when I put the blower on.

My best uneducated guess is that the symptoms seem to point to a thermostat problem.

If anyone has any ideas on what this may be it would be good to hear from you ?

Thanks

Stuart

Vote

ILS 22 years ago

My A6 overheated due to a cracked impeller in the water pump. You don't mention mileage but mine went at 90,000 miles.

If you drove the car with high revs the crack was sufficient to cause the impeller to slip on the shaft and then the car would overheat. Drive it with low revs and the impeller wouldn't slip on the shaft and didn't overheat. Had same heater problems, prbably as the water is not being circulated correctly. Hope it helps.

Ian.

Vote

Stuart 22 years ago

Only 30K miles and it was in city traffic that it first happened. Thanks for your points though, it could be more complicated than first thought.

2 Mths left on my RAC warranty, I better get to work fast. Stuart

Vote

Stube 22 years ago

Ian, I can now confirm that the fault was traced to the waterpump. I hope I caught the overheat in time. Thanks Stuart

Vote

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required